Half Marathon Pace Calculator
Find the per-mile pace needed to finish a half marathon (13.1 miles) in your target time.
hr
min
Pace (min/mile)
9 min
Pace (sec remainder)10 sec
Pace (min/km)5.69 min/km
Average Speed6.55 mph
Pace (min/mile) vs Target Hours
How Half Marathon Pace Is Calculated
A half marathon is 13.1 miles (21.0975 km).
Formula
Pace (min/mile) = Total Time (minutes) / 13.1
Training Notes
Your half marathon pace is typically 15-30 seconds per mile slower than your 10K pace. A proper training plan should include tempo runs at or near half marathon pace.
Example Calculation
You want to finish a half marathon in 2 hours.
- 01Total time = 2 * 60 + 0 = 120 minutes
- 02Pace = 120 / 13.1 = 9.16 min/mile
- 03That is 9 minutes and 10 seconds per mile
- 04Speed = 13.1 / 2 = 6.55 mph
Frequently Asked Questions
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